The Castelli Men's Aero Race 6.0 Jersey is specialized for riders who are training for their next marathon and have comfort and breathability on top of their list. This moisture-wicking jersey has Velocity Rev2 fabric on the front and sleeves plus a breathable 3D Mesh on the back. The shoulders of this jersey are constructed to promote better airflow so there is less friction from the wind. YKK® Vislon® zippers are implemented, the sleeves are elbow length and include a raw cut edge, and the drop tails allow ideal pocket placement so you can keep your essential bike essentials close by. The overall engineering is made for aero efficiency at 30 to 55 km/h runs so you can perform at your best without the slack. The Castelli Men's Aero Race 6.0 Jersey will be your signature bike essential for all your daily road runs!